JPH1040118A - Client server system and client terminal equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve a processing effect by distributing processing requests to each of a plurality of objects which operate the same processing without any deviation, and to improve the performance of an entire system by controlling load distribution to the process of a server according to a request from an application program executing means. SOLUTION: A load distribution controlling part 120 is provided with a process information obtaining part which obtains process information by performing access to a process information managing part 130, and an object information obtaining part which obtains object information by performing access to an object information managing part 140. Then, the management of the using state of an object and the load distribution of a process are executed independently of an application program. That is, the processing information obtaining part refers to the process information managing part 130, obtains necessary object reference from the object information managing part 140, and performs access to a process group 210 of a server 200 according to calling from an application execution part 110.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an object-oriented client / server system connected by an ORB (Object Request Broker) and a client terminal thereof, and particularly to a case where objects performing the same processing are mounted on a plurality of processes. The present invention relates to a client / server system and a client terminal for making a processing request efficiently.

[0002]

2. Description of the Related Art In an object-oriented client / server system in which a client and a server are connected by an ORB, in order to call an object for performing a certain process (to issue a process request to the object), the object is uniquely associated with each object. You must use a code called an object reference. Therefore, when calling a desired object, it is necessary to determine a specific object to be called.

In such an object-oriented client / server system, when an object performing the same processing exists in a plurality of processes, processing requests are biased to some of the objects and processing efficiency may deteriorate. There is. Therefore, when objects performing the same processing exist in a plurality of processes, the client side (user side) determines which objects are in use and which are unused in order to perform efficient operation. , And by calling an object that performs the requested processing using an appropriate object reference, the optimum load distribution of the process must be achieved.

Conventionally, this object management and load distribution to multi-processes have been realized as functions of application programs running on clients.

[0005]

As described above, in the conventional client / server system, object management and load distribution to multi-processes are realized as functions of an application program, so that the structure of the application program becomes complicated. There is a possibility that it takes time to develop the application program or the processing efficiency of the application program is reduced.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned conventional drawbacks, and to solve the problem in the object-oriented client / server system connected by the ORB when there are a plurality of objects performing the same processing on a plurality of processes of the same server machine. In order to provide a client / server system capable of improving processing efficiency by distributing processing requests to respective objects without bias without requiring control by an application program, and improving the performance of the entire system. is there.

[0007]

According to the object-oriented client / server system of the present invention which achieves the above object, a client is provided with an application program executing means for executing an application program and a request from the application program executing means. Load distribution control means for controlling load distribution to the server process, process information management means for managing the use state of the server process, and object information for managing reference information of objects existing in each process of the server Management means.

In another aspect, the load distribution control means detects an unused process by referring to the process information management means in response to an object call request from the application program execution means, It is characterized in that reference information of an object related to the call request of the detected process is obtained from the object information management means, and a corresponding process of the server is accessed to call the object.

In another aspect, the apparatus further comprises a load distribution control means managing means for managing the load distribution control means, wherein the application program execution means executes a processing request based on the management information of the load distribution control means management means. Is specified, and a request is made to the load distribution control means to call an object for executing the processing.

[0010]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of a client / server system according to one embodiment of the present invention.

As shown in FIG.
The server system is connected to a client 10 connected by an ORB (Object Request Broker) 300.
0 and the server 200. Client 100
An application program execution unit 110 for executing an application program, and a load distribution control unit 12 for controlling the load distribution of a process in the server 200
0, a process information management unit 130, an object information management unit 140, a load distribution control unit information search unit 150, and a load distribution control unit information management unit 160 for accessing the load distribution control unit 120 from an application program.
And The server 200 includes a process group 210 including a plurality of processes, and a database file 220 that stores data according to the purpose of the system. In addition,
FIG. 1 shows only the characteristic configuration of the present embodiment, and the description of the other configurations is omitted.

FIG. 2 is a block diagram showing in detail each configuration of the client 100 and the server 200 constituting the embodiment.

Application program execution unit 110
Is realized by a CPU and a memory such as a RAM, and executes processing according to the purpose of the system under the control of a stored application program. In this embodiment, the application program does not need a function of executing object management and multi-process load distribution. When issuing a processing request to an object, the load distribution control unit 120
Call the appropriate object via. The access to the load distribution control unit 120 is performed by the load distribution control unit information search unit 1
This is performed based on the load distribution control unit information obtained from the load distribution control unit information management unit 160 via the control unit 50.

The load distribution control unit 120 is realized by a program-controlled CPU or the like, and includes a process information management unit 130
And a process information obtaining unit 121 that accesses the object information management unit 140 and obtains object information. Then, the management of the use state of the object and the load distribution of the process are executed independently of the application program. That is, in response to a call from the application program execution unit 110, the process information acquisition unit 121
30, the object information acquisition unit 122 acquires a necessary object reference from the object information management unit 140 and accesses the process group 210 of the server 200. Further, a plurality of load distribution control units 120 are provided according to the processing content of the application program. The detailed operation of the load distribution control unit 120 will be described later.

The process information management unit 130 is realized by a storage device such as a magnetic disk device or a memory such as a RAM, and stores information on a use state for each process included in the process group 210 of the server 200.

The object information management unit 140 is realized by a storage device such as a magnetic disk device, and stores reference information of an object existing in each process included in the process group 210 of the server 200.

The load distribution control unit information retrieval unit 150 is realized by a program-controlled CPU or the like, and, in response to a request from the application program execution unit 110, retrieves necessary information on the load distribution control unit 120 from the load distribution control unit information. It is detected from the management unit 160 and passed to the application program execution unit 110.

The load distribution control unit information management unit 160 is realized by a storage device such as a magnetic disk device, and stores the load distribution control unit information for specifying the load distribution control unit 120 corresponding to the processing content controlled by the application program. Store.

Next, the operation of this embodiment will be described with reference to the flowcharts of FIGS.

As shown in FIG. 2, in the present embodiment, the application program executed by the application program execution unit 110 is a program for performing a withdrawal process. It is assumed that the load distribution control unit 120 has two types, one relating to withdrawal processing and the other relating to transfer processing. The load distribution control unit information management unit 160 stores information relating to these load distribution control units 120. ing.
The process group 210 of the server 200 includes three processes, process A, process B, and process C, and information on the use status of these processes is stored in the process information management unit 130.

Application program execution unit 110
When calling the object for performing the dispensing process from the application program execution unit 110, first, accesses the load distribution control unit information search unit 150 and requests the necessary information of the load distribution control unit 120 (step 301).
In response to a request from the application program execution unit 110, the load distribution control unit information search unit 150 detects the load distribution control unit information X corresponding to the payment processing from the load distribution control unit information management unit 160, and executes the application program. Send to section 110.

Application program execution unit 110
Calls the load distribution control unit 120 corresponding to the payment processing based on the acquired load distribution control unit information X (step 302).

In the called load distribution control unit 120, first, the process information acquisition unit 121 accesses the process information management unit 130, checks the use status of the process in which the object for performing the withdrawal process exists, A process is determined (step 303). In the example of FIG. 2, since the process B is not used, it is determined as the process to use. The use state of the process B of the process information management unit 130 is updated during use (step 304).
Here, if there is no unused process, the request from the application program execution unit 110 is saved (step 310).

Next, the object information acquisition unit 122 of the load distribution control unit 120 refers to the reference information of each object existing in the process B determined as the process used by the process information acquisition unit 121 from the process information management unit 140. Then, the reference information of the object of the payment processing corresponding to the processing request is searched and obtained (step 305).

Next, based on the object reference information acquired by the object information acquisition unit 122, the load distribution control unit 120
Specify the corresponding process B from 0, and
Call the target object in
6). The called object executes a dispensing process in response to the processing request (step 307). When the processing by the object is completed, the process information acquisition unit 1
21 updates the information on the use state of the process in the process information management unit 130 to unused (step 30).
8).

Thereafter, it is checked in step 303 whether there is a saved request. If there is a saved request, it is checked again whether or not there is an unused process.
03 to step 308 are repeated (step 309).
If there is no saved request, the process ends.

FIG. 4 is a block diagram showing in detail each configuration of the client 100 and the server 200 in the client / server system according to another embodiment of the present invention.

As shown, the client 1 of this embodiment is
Reference numeral 00 denotes an application program execution unit 110 for executing an application program, a load distribution control unit 170 and a process information management unit 180 for controlling load distribution of a process in the server 200, and an access to the load distribution control unit 120 from the application program. And a load distribution control unit information search unit 150 and a load distribution control unit information management unit 160 for performing the operations. In the above configuration, the configurations of the application program execution unit 110, the load distribution control unit information search unit 150, the load distribution control unit information management unit 160, and the server 200 are the same as those of the above-described first embodiment. The same reference numerals are given and the description is omitted.

In this embodiment, the process information management unit 1
Reference numeral 80 is realized by a storage device such as a magnetic disk device or a memory such as a RAM, and stores information on a use state for each process included in the process group 210 of the server 200 and reference information for each object existing in each process. Stored. Since the process information management unit 180 stores reference information of each object existing in each process, it is not necessary to provide an object information management unit in addition to the process information management unit 180 as in the first embodiment.

The load distribution control section 170 is realized by a program-controlled CPU or the like.
And a process information acquiring unit 171 that acquires process information and object information by accessing the process information. That is,
The process information acquisition unit 171 has the functions of the process information acquisition unit 121 and the object information acquisition unit 122 in the load distribution control unit 120 of the first embodiment.

The load distribution control unit 170, like the load distribution control unit 120 of the first embodiment, manages the use state of the object and distributes the load of the process independently of the application program. That is, in response to a call from the application program execution unit 110,
The process information acquisition unit 171 is a process information management unit 180
And obtains a necessary object reference, and accesses the process group 210 of the server 200.

Although the present invention has been described with reference to the preferred embodiments, the present invention is not necessarily limited to the above embodiments.

[0034]

As described above, in the client / server system according to the present invention, the load distribution is controlled by the load distribution control means provided independently of the application program. In the case of the above, processing requests can be equally distributed to each object without requiring control by an application program. As a result, it is possible to avoid the complexity of the structure of the application program and a decrease in processing efficiency due to the application program, and to improve the performance of the entire system.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a client / server system according to one embodiment of the present invention.

FIG. 2 is a block diagram illustrating a detailed configuration of a client and a server in FIG. 1;

FIG. 3 is a flowchart illustrating the operation of the present embodiment.

FIG. 4 is a block diagram illustrating a detailed configuration of a client and a server according to another embodiment of the present invention.

[Explanation of symbols]

 Reference Signs List 100 client 110 application program execution unit 120, 170 load distribution control unit 121, 171 process information acquisition unit 122 object information acquisition unit 130, 180 process information management unit 140 object information management unit 150 load distribution control unit information search unit 160 load distribution control Department information management unit 200 server 210 process group 220 database file

Claims (6)

[Claims] 1. An object-oriented client / server system comprising a client and a server connected by an object request broker, wherein the client executes an application program, and executes the application program. Means for controlling load distribution to processes of the server according to a request from the means; process information management means for managing a use state of the process of the server; reference information of an object existing in each process of the server Client / server system, comprising: object information management means for managing the information. 2. The method according to claim 1, wherein said load distribution control means detects an unused process by referring to said process information management means in response to an object call request from said application program execution means. 2. The client / server system according to claim 1, wherein reference information of an object related to the call request of the detected process is acquired from the server and a corresponding process of the server is accessed to call the object. 3. A load balancing control means managing means for managing the load balancing control means, wherein the application program executing means performs load balancing corresponding to a process requested based on management information of the load balancing control means managing means. 2. The client / server system according to claim 1, wherein the client / server system specifies a control unit and requests the load distribution control unit to call an object for executing the processing. 4. An application program executing means for executing an application program in a client terminal device constituting an object-oriented client / server system in which a client and a server are connected by an object request broker, and said application program executing means A load distribution control unit that controls load distribution to the server processes in response to a request from the server; a process information management unit that manages a use state of the server processes; and reference information of an object existing in each process of the server. A client terminal device comprising: object information management means for managing. 5. The load distribution control unit detects an unused process by referring to the process information management unit in response to an object call request from the application program execution unit, and detects the unused process. 5. The client terminal device according to claim 4, wherein the client terminal device obtains reference information of an object related to the call request of the detected process from the server and accesses a corresponding process of the server to call the object. 6. A load balancing control means managing means for managing the load balancing control means, wherein the application program executing means performs load balancing corresponding to a process requested based on management information of the load balancing control means managing means. The client terminal device according to claim 4, wherein the client terminal device specifies a control unit and requests the load distribution control unit to call an object that executes the processing.